JP2580712Y2 - Device to soften earthquake shaking - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for reducing the shaking of a steel frame, a reinforced concrete structure, a building, and a wooden building during an earthquake.

[Conventional technology]

The conventional earthquake-resistant structural device installed square rubber structures (also called seismic isolation, vibration control, and earthquake resistance) in several places under the foundation,
Moreover, it is fixed to the foundation and the foundation of the building to support the vertical load and absorb the vibration, but the load causes the rubber part to buckle. In addition, the foundation and the foundation of the building are connected by steel rod dampers. Although a hydraulic spring is incorporated in this damper to absorb the vibration, there is a problem that the damper is fixed up and down and cannot cope with omnidirectional vibration.

[Problems to be solved by the invention]

Conventional rubber structures (also called seismic isolation, vibration control, and seismic resistance)
In, the buckling phenomenon (the energy of the load appears on the side of the rubber elastic body and the side bulges) appears on the rubber elastic body itself because it receives the load of the structure and building,
Internal heat is generated to accelerate aging. A damper incorporating a hydraulic spring is also effective for right and left sway, but has a problem for unspecified sway.

According to the present invention, the rubber elastic body is a movable anti-vibration rubber roll (A), (B), and a pair thereof is used. An iron core is used at the center, and the rubber elastic body is bonded to the iron core by baking. Attach rotating wheels (b) and (b) 'to both ends of the iron core. The anti-vibration rubber rolls (A) and (B) are arranged as a pair,
(A), (B) The free movements of the rubber cushions (A), (B) are controlled by connecting the iron cores at the center with a steel shaft.
The vibration-proof rubber roll uses a synthetic rubber having good compression set. Insert an iron core in the center. Moreover, the rubber buckling phenomenon is small because the shape of the rubber cushion is cylindrical.

The direction of shaking during an earthquake is unspecified, and the seismic intensity, shaking duration,
It is difficult to predict the presence or absence of aftershocks, even in today's scientifically advanced areas. In addition, the economy continues to be at a high level, and high-rise buildings are being built one after another due to soaring land prices accompanying the boom. In each case, the increase in volume inevitably weakens the strength of the building relative to the land area. In an earthquake-prone country like Japan, the past earthquake (the Great Kanto Earthquake of 1979, M7.9) must be used as a lesson. At the time of the past earthquake, there was no experience with high-rise buildings and earthquake resistance.

Recently, the number of reinforcing bars has been increased to increase the strength of columns, beams, and walls, joints have been lengthened, stirrups and stirrups have been increased, and deformed reinforcing bars have been adopted to increase the contact surface area with mortar. But not complete. In particular, when the wall thickness is small, there is a possibility that mortar is destroyed with resonance of seismic intensity.

The present invention is directed to a device for relieving shaking caused by an earthquake, and further includes a movable anti-vibration rubber roll used for the device, a pivot multiple roller bearing capable of coping with omnidirectional shaking, and a base beam (1) and a base beam (2). The O-ring for connecting the fixing cords attached to the stake is easy to attach. Maintenance inspection and replacement after aging are also possible.

[Means for solving the problem]

In order to achieve the above object, in the three devices of the present invention, first, the anti-vibration rubber roller is made movable to deflect momentary seismic energy. The shaking is reduced by a rotating belt (b), a rotating belt (f), and a rubber belt connecting the fixed rigging (g) via the rotating wheel (b). Vibration isolation rubber rolls work to maintain the force of the rubber isolation belt to return to its original position due to the tensile strength, elongation, tensile stress and elasticity of the rubber belt.These devices are used for vertical and horizontal foundation beams of structures and buildings. Attach.

Next, by installing the pivot multiple roller bearing, the pivot bearing against shaking from an unspecified direction,
Stable in all directions due to sliding friction. Multi-roller bearings balance the rotation, that is, reduce the shaking by the force of rolling friction. The upper shoe, the upper shoe, which has a cushioning effect due to the elastic body of the vibration isolating rubber attached to the lower shoe,
The lower shoe was attached to the foundation with anchor bolts to improve its fixation to the structure. The bolt hole was enlarged and a rubber bush was inserted. The upper block and the lower block were connected to absorb the shaking, and a side block was installed to prevent lifting.

Also, if a number of fixing cords installed on the foundation beam (1) and the foundation beam (2) are fixed in the above order with a rubber belt, rubber, and synthetic resin, an effect of connecting the upper beam and the lower beam like a conventional damper can be obtained. It is effective not only for left and right sway, back and forth sway, up and down sway, but also omnidirectional sway.

[Action]

Since the device configured as described above is a device for relieving shaking caused by an earthquake, it can cope with shaking in all directions. There is a sudden change in the earth's crust, which spreads in four directions as a wave.In other words, earthquakes include left-right movement, back-and-forth movement, up-and-down movement, or unspecified azimuth movement. It is difficult to predict the direction. In order to protect structures and structures from earthquakes, it is of course necessary to reduce the material strength, weight and toughness of the structures and structures, but there is still no reliable one. However, conventional rigid structure foundations, rigid structure structures, and buildings cannot be sufficiently used. Problems can occur with high and very high rises. Due to soaring land prices, landfills and soft ground zones are being used more and more for structures and buildings, but the shaking during an earthquake is said to be about 10 times that of ordinary ground. This is exactly the danger itself. In particular, structures built on soft clay layers are vulnerable to shaking. Even if a long concrete pipe with reinforced steel is driven in to reinforce the foundation, a complete effect cannot be expected.
Land subsidence is one of the alarm bells. The first step is to strengthen and improve the clay layer that forms the stratum (which often contains water). The structure built on the untreated clay layer is a tower on the sand. If the thixotropic property of the clay layer is improved by injecting high molecular colloid particles as a method of strengthening and improving the clay layer, rapid shaking can be buffered by the formation of an elastic body.
At present, the aesthetics, elegance, function, economy, etc. of structures and buildings are prioritized over strengthening and improvement of soil quality, so when an earthquake around M8 occurs, structures, buildings such as collapse, collapse, slope collapse, etc. Many will occur. In the event of an unpredictable earthquake disaster, the primary buffer is to strengthen and improve the clay layer, but in the second place, devices that soften the sway of the foundations of structures and buildings operate smoothly, reducing the impact of earthquakes. It is softening.

〔Example〕

There is no embodiment for structures and buildings, because the scale and cost of implementation will be prohibitive.

[Effects of the Invention] The present invention has the effect of reducing the shaking of an earthquake as described above. The entire apparatus can be made large or small depending on the scale of the structure or building. This device is also attached to the foundations (a), (b), (c), and (d) of the wooden house, and has an effect of reducing the shaking of the earthquake.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part in which a device for softening an earthquake of a structure or a building is attached to a foundation (a), a perspective view of the main part (b), and FIG. Perspective view of the device, (a) smashing stone, (b) below the base with rebar,
(C) on a foundation with reinforcing bars, (d) foundation (tree), (e) multiple roller support of pivot, (f) movable vibration-proof rubber roller, (g) rubber belt, (h) fixing cord, FIG. a) is a perspective view of a movable vibration-isolating rubber roll, (b) is a cross-sectional view of the movable vibration-isolating rubber roll, and 3-1 is a steel connecting shaft.
3-2 rubber belt, 3-3 anti-vibration rubber, 3-4 iron core, 3-
FIG. 4 is a cross-sectional view of a main part of the movable vibration-isolating rubber roll, 4-1 iron core, 4-2 rotating wheel (b), (b) ', 4-3 rubber belt, 4-4 nut, 4 -5 rotary shaft, 4-6 presser washer, 4-7 rubber roll with good compression set, 4-8
5-9 steel connecting shaft, 4-10 split pin, 4-11 steel connecting shaft. Fig. 5 is a cross-sectional view of a pivot multiple roller support. Rubber, 5-2 Anti-vibration rubber for lower shoe, 5-3 pivot support, 5-4 multiple roller support, 5-5 PTFE treatment, Fig. 6 shows two sets of movable anti-vibration rubber rolls (A) and (B) (A), (B) movable anti-vibration rubber roll,
(B), (f) the rotating wheel, (c) the rig fixed to the base (1), (i) the rubber belt, the rig (c), the rotating wheel (b), the rotating wheel (f), and again The rubber belt is fixed to the rigging device (g) fixed to the base portion (2) via the rotating wheel (b). (Ii) A rubber belt, a rubber belt from a rig (te), a rotating wheel (f), a rotating wheel (b), and a rotating wheel (f) again to a rig (na) fixed to the base part (2). Fix it. Due to the tensile strength, elongation, tensile stress, and elasticity of the rubber belts (i) and (ii), the rubber belts (i) and (h) soften the sway and maintain the force to return to the original position. Fig. 7 shows the layout of the ropes and rubber belt fixed on the foundation beams (1) and (2), and fixed ropes (nu), (ne), (no), (c), (h),
(F), (F), (E), (M), (M), (M),
(Me), (mo), (ya), (a), (yu) ... fixed cable rigs (ne) and (ma), (ne) and (mu), (no) and (mi), (No) and (me), (ha) and (mu), (ha) and (mo), (hi) and (me), (hi) and (ya), (hu) and (mo), (fu) ) And (A), (F) and (Y), (F) and (Y), (E) and (A) are fixed with a rubber belt, rubber, or synthetic resin.

Claims (2)

(57) [Scope of request for utility model registration] 1. A steel frame, a reinforced concrete structure, a building,
On the foundation of a wooden building, a circular movable anti-vibration rubber roll A
B is a set of two, a large number of which are arranged to soften the shaking of the earthquake. Rubber rolls A and B, which are baked and bonded to the iron core, are connected to the steel shaft on both sides, and The rotating wheels attached to both sides are connected by rubber belts from the rigging fixed to the upper and lower foundations, and two alternately combined rubber belts on one side and four rubber belts on both sides maintain the balance of a circular movable rubber vibration isolator A device that softens the shaking of an earthquake. 2. A plurality of fixed rigging devices are provided at regular intervals on both sides of the base portion and below the base portion, and a rubber belt is connected alternately to upper and lower and lower and upper portions from the ends of the fixed rigging device. 2. The device according to claim 1, wherein the end of the buckle is tied to the terminal rigging device.